1021220222101 has 8 divisors (see below), whose sum is σ = 1023494503680. Its totient is φ = 1018946237232.

The previous prime is 1021220222069. The next prime is 1021220222111. The reversal of 1021220222101 is 1012220221201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021220222101 - 2⁵ = 1021220222069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021220222111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7726296 + ... + 7857358.

It is an arithmetic number, because the mean of its divisors is an integer number (127936812960).

Almost surely, 2^{1021220222101} is an apocalyptic number.

It is an amenable number.

1021220222101 is a deficient number, since it is larger than the sum of its proper divisors (2274281579).

1021220222101 is a wasteful number, since it uses less digits than its factorization.

1021220222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148355.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1021220222101 its reverse (1012220221201), we get a palindrome (2033440443302).

The spelling of 1021220222101 in words is "one trillion, twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred one".